Answer:
![v = 1.71 m/s](https://tex.z-dn.net/?f=v%20%3D%201.71%20m%2Fs)
Explanation:
As we know that there is no friction in the bowl so total mechanical energy is conserved here
So we can say that
initial potential energy of the butter = final kinetic energy at the bottom
so we can say
![mgH = \frac{1}{2}mv^2](https://tex.z-dn.net/?f=mgH%20%3D%20%5Cfrac%7B1%7D%7B2%7Dmv%5E2)
here we can solve it for speed v
![v^2 = 2gH](https://tex.z-dn.net/?f=v%5E2%20%3D%202gH)
now plug in all values in it
![v^2 = (2 \times 9.8\times 0.150)](https://tex.z-dn.net/?f=v%5E2%20%3D%20%282%20%5Ctimes%209.8%5Ctimes%200.150%29)
![v = 1.71 m/s](https://tex.z-dn.net/?f=v%20%3D%201.71%20m%2Fs)
Mental telepathy, generally speaking, is not a way that you can communicate
Answer:
The vast amount of energy produced by the Sun over the past 4.5 billion years exceeds the amount that could be supplied by burning or shrinking of the Sun by a significant factor. Chemical burning would only last a few thousand years, whereas gravitational contraction would provide energy for only about a hundred million years. but we can confidently say the sun gets its energy from matter that is converted into energy through the fusion of hydrogen into helium.
Answer: 9.9999872 C
Explanation: In to answer this question we have to use the charge of the electron, that is eqaul to -1.6*10^-19 C.
After that, we have to calculate the charge given by 8.0*10^13 electrons, then we an additional charge of: 8.0*10^13 * -1,6*10^-19 C=1.28*10^-5C
Finally the net charge of the metal sphere, initially charged by +10C is:
10C-1.28*10^-5C=9.9999872 C
Speed=distance/time
distance = 10,000 m
time= 27 min 30.42s but we need to convert that completely to seconds
(27x60)+30.42= 1650.12 rounded to 1650
speed=10,000/1650.12
speed=6.059063
Because when we do sig dig we round to the least number of digits we would round to 4 because 1650.12 gets rounded to 1650
so 6.059 m/s